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(No Model.) 2 Sheets-Sheet 1.

' G. STITES.

INDEX MACHINE.

Patented Oct. 16, 1888.

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(No Model.) 2 Sheets-Sheet 2. G. STITES.

INDEX MACHINE.

No. 391,345. Patented Oct. 16, 1888.

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U ITED STATES PATENT Fries.

GEORGE STITES, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE \VILLIAM CHAMP 8t SONS SHIP AND ENGINE BUILDING COMPANY, OF

SAME PLACE.

INDEX-MACHINE.

SPECIFICATION forming part of Letters Patent No. 391,345, dated October 16, 1888.

Serial No. 263,876. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE STITES, a citizen of the United States, residing in the city and county of Philadelphia, and State of Pennsylvania,have invented certain Improvements in Index Machines, of which the following is a specification.

The object of my invention is the construction of a machine, for employment in connection with a drill press of any preferred character, which will correctly present to the action of the drill a hollow cylinder which it is desired to supply with perforations disposed in circumscribing series but preferably disposed and applied in a regular spiral series continuously circumscribing said cylinder, and some of which are to be radial and some inclined with respect to the axis of the cylinder. I term the said device an index machine. The hollow cylinders which by the use of this machine and by the aid of a drill press I intend to perforate, are such as I employ in the manufacture of a cylindric brush invented by me,application for patent for which has been designated by me as Case 0 and executed and filed contemporaneously with this application,-the perforations being those required to receive the radially projecting tufts of bristles with which the cylinder, which is the cylindric stock or brush board of the brush, is provided. The only connection which this invention has with the brush in question resides in the fact that it is a device-which is preferably employed for perforating the cylindric brush stock of said brush; the invention in itself is applicable in connection with the perforation of cylinders generally.

A machine embodying my invention is represented in the accompanying drawings and described in this specification, the particular subject matter claimed as novel being hereinafter definitely specified.

In the accompanying drawings, Figure 1 is a top plan view of a machine embodying my invention, the cylinder-supporting heads and cylinder in place upon them being in section. Fig. 2 is a side elevational view of the machine represented in Fig. 1. Fig. 3 is an end elevational View of the machine of Figs. 1 and 2 viewed from the left hand end. Fig. 4c is a fragmentary plan of the guide catch and neighboring parts. Fig. 5 is a similar view of the nut catch. Fig. 6 is a fragmentary side elevational view of the index wheel. Fig. 7 is a side elevational view of my machine in place upon the bed of the drill press. Fig. 8 is a side elevation and Fig. 9 a left hand end view of such a wedge-shaped supporting block as I prefer to employ in connection with the bed of a press to which my machine is appplied.

In the drawings, A represents a supporting frame composed essentially of a flat plate which is a base block and to which the letter A is applied, and of three standards, A A A, which support the cylinder-carrying shaft B of the machine. This shaft is, as to its,in Figs. 1 and 2, right hand extremity, cut with a square thread which I term the index screw b, which is adapted to a semicylindric bearing a in the standard A. The bearing a is not threaded, in order that the square-edged crests of the threads may move end for end through it, whenever a nut catch 0, hinged to the standard A, is swung over from the position represented in Fig. 1 to that represented in Fig. 5, that is to say into a position in which its nut threads 0 are out of engagement with the threads of the index screw 1).

The left hand extremity of the cylindercarrying shaft is smooth or cylindric except near its extremity where it is circumscribed by adepressed guide groove b Fig. 4, adapted to be engaged by a guide catch D hinged to the standard A (orA and adapted either to be swung back and clear of the guide groove as shown in Fig. 1, or else to be swung forward into said groove as shown in Fig. 4., in which latter position the endwise movement of the shaft is prevented. The smooth extremity of the shaft rests in semi cylindric bearings a and a formed respectively in the standards A and A and in these bearings said extremity is free either for rotation or for endwisc movement.

E is a toothed index-wheel feathered upon the smooth extremity of the shaft and disposed between the standards A A it being of sufficient breadth to fill the interspace be- 5 tween said standards.

F is a pawl operative in connection with the index wheel and hinged atf to the standards A A This pawl determines the extent of the rotation of the shaft, it being preferably a gravity pawl always engaged with the teeth of the index wheel.

b is a fixed collar upon the shaft applied at the inner extremity of the index screw and de fining the division between the smooth and screw-provided portions of said shaft.

G are a pair of cylinder-supporting heads of the diameter of the cylinder H to be perforated, each feathered upon the shaft B, and each preferably peripherally recessed as at g to fit them to support the chines or end edges of said cylinder,

I is a head-nut threading upon a nut'thread b on the shaft, and serving, when the cylinder is in place with respect to the cylindersupporting heads, to maintain the outer head in contact with the outer chine of the cylinder, the inner chine of the cylinder in contact with the inner head, and said inner head in contact with the fixed collar upon the shaft.

It will now be apparent that, when both the hinged nut catch and the hinged guide catch are thrown back, the shaft will be free for endwise motion withrespect to its semi-cylin dric hearings in the standards; that, when the nut catch is engaged with the index screw and the guide catch thrown back, a rotation of the shaft will be accompanied by its endwise movement with respect to its bearings; and that, when the guide catch is engaged with the guide groove and the nut catch thrown back, the shaft, while of course free for rotation will be controlled against endwise movement with respect to its bearings. Both catches cannot, of course,'do duty at the same time. It will also be apparent that whether the shaft is simply rotating or both rotating and travelling endwise with a regulated speed, the index wheel will simply rotate with it its feather d connection with the shaft insuring such 50 a tion. It will also be apparent that the shaft an be lifted from its bearings for the slipping n and off of the cylinder to be carried by it /and of the outer head.

Such being a description of my index ma- 5 5 chine in itself, it is apparent that,when said machine carrying the cylinder to be drilled has .been placed flat upon the bed of a drill press, and the cylinder brought into suitable juxtaposition with respect to the drill,by

60 the rotation of the shaft,under the control of the index pawl and wheel and with a suitable regulation of the nut and guide catches, the cylinder can be provided with either a succession of circumferentially disposed perforations all in the same plane or else with a circumferentially-but spirally disposed series, the relative disposition of the perforations composing either of which series being determined by the extent of said rotation and of said endwise movement between each application of the drill. During the act of drilling the machine is, of course, at rest.

In Fig. 7 I have illustrated a bed J of a drill press of any preferred character, and also the drill K of said press, and I have also represented a wedge-shaped supporting block L in place between the bed of the press and the under face of the base block of my machine, the application of said block being for the purpose of presenting the cylinder at any desired angle with respect to the drill in order that the perforations may be inclined to the surface of the cylinder and not radial-with respect to its axis. It is, of course, to be understood that many supporting blocks possessing respectively different tapers may be provided, and that they may be so applied that the inclination imparted to the holes formed through the cylinder may be either right or left handed as indicated in full and in dotted lines in Fig. 7, the drilling of holes at an angle, when my machine is in usefor the perforation of the cylindric brush stocks of my brush, being to impart to the tufts of bristles, which are introduced into said angular perforations, an outward splay. p

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States 1. The combination, of a shaft-supporting frame having bearings for a shaft, a shaft in part threaded in part cylindric and provided with a guide groove, an adjustable guide catch, an adjustable nut catch, cylinder-supporting heads upon the shaft, and suitable means for retaining said heads in given relative positions, substantially as set forth.

2. The combination, of a shaft-supporting frame having bearings for a shaft, a shaft in part threaded in part cylindric and provided with a guide groove, an adjustable guide catch, an adjustable nut catch, cylinder-supporting heads upon the shafts, suitable means for retaining said heads in given relative positions, and an index wheel upon said shaft, substantially as set forth.

3. The combination, of ashaft-supporting frame having bearings for a shaft, a shaft in part threaded in part cylindric and provided with a guide groove, an adj ustable guide catch, an adjustable nut catch, cylinder-supporting heads upon the shaft, suitable means for retaining said heads in given relative positions, and a drill press upon which said shaft-supporting frame is mounted, substantially as set forth. V

4. The combination, of a shaft-supporting frame having bearings for a shaft, a shaft in part threaded in part cylindric and provided with a guide groove, an adjustable guide catch, an adjustable nut catch, cylinder-supporting heads upon the shaft, suitable means for retaining said heads in given reiative positions, In testimony that I clairn the foregoing as my a drill press upon which said shaft supportinvention Ihave hereunto signed my namethis ing frame is mounted, and a wedge-shaped 7th day of February A. D. 1888.

supporting block intermediate between the GEORGE STITES. 5 bed of the drill press and the shaft-supporting In presence of-- frame, substantially as and for the purposes set J. BONSALL TAYLOR,

forth 1 F. NORMAN DIXON. 

